PART 2 - INTERNATIONAL CRIMES AND OFFENCES AGAINST ADMINISTRATION OF JUSTICE
International crimes
11.
War crimes—
(3)The penalty for a war crime is,—
(a)if the offence involves the wilful killing of a person, the same as the penalty for murder:
(b)in any other case, imprisonment for life or a lesser term
National penalties - war crimes
Sentencing - national proceedings
EDIT.